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Re: [Qemu-devel] [PATCH v8 04/13] qemu.py: improve message on negative e
From: |
Fam Zheng |
Subject: |
Re: [Qemu-devel] [PATCH v8 04/13] qemu.py: improve message on negative exit code |
Date: |
Tue, 5 Sep 2017 11:02:55 +0800 |
User-agent: |
Mutt/1.8.3 (2017-05-23) |
On Fri, 09/01 13:28, Amador Pahim wrote:
> The current message shows 'self._args', which contains only part of the
> options used in the Qemu command line.
>
> This patch makes the qemu full args list an instance variable and then
> uses it in the negative exit code message.
>
> Message was moved outside the 'if is_running' block to make sure it will
> be logged if the VM finishes before the call to shutdown().
>
> Signed-off-by: Amador Pahim <address@hidden>
> ---
> scripts/qemu.py | 26 +++++++++++++++++++-------
> 1 file changed, 19 insertions(+), 7 deletions(-)
>
> diff --git a/scripts/qemu.py b/scripts/qemu.py
> index a6e06291ea..670c048569 100644
> --- a/scripts/qemu.py
> +++ b/scripts/qemu.py
> @@ -49,6 +49,7 @@ class QEMUMachine(object):
> self._iolog = None
> self._socket_scm_helper = socket_scm_helper
> self._debug = debug
> + self._qemu_full_args = None
>
> # This can be used to add an unused monitor instance.
> def add_monitor_telnet(self, ip, port):
> @@ -140,13 +141,18 @@ class QEMUMachine(object):
>
> def launch(self):
> '''Launch the VM and establish a QMP connection'''
> + self._qemu_full_args = None
> devnull = open(os.path.devnull, 'rb')
> qemulog = open(self._qemu_log_path, 'wb')
> try:
> self._pre_launch()
> - args = self._wrapper + [self._binary] + self._base_args() +
> self._args
> - self._popen = subprocess.Popen(args, stdin=devnull,
> stdout=qemulog,
> - stderr=subprocess.STDOUT,
> shell=False)
> + self._qemu_full_args = (self._wrapper + [self._binary] +
> + self._base_args() + self._args)
The parentheses seem superfluous. With those removed:
Reviewed-by: Fam Zheng <address@hidden>
> + self._popen = subprocess.Popen(self._qemu_full_args,
> + stdin=devnull,
> + stdout=qemulog,
> + stderr=subprocess.STDOUT,
> + shell=False)
> self._post_launch()
> except:
> if self.is_running():
> @@ -164,14 +170,20 @@ class QEMUMachine(object):
> self._qmp.close()
> except:
> self._popen.kill()
> + self._popen.wait()
>
> - exitcode = self._popen.wait()
> - if exitcode < 0:
> - LOG.warn('qemu received signal %i: %s', -exitcode,
> - ' '.join(self._args))
> self._load_io_log()
> self._post_shutdown()
>
> + exitcode = self.exitcode()
> + if exitcode is not None and exitcode < 0:
> + msg = 'qemu received signal %i: %s'
> + if self._qemu_full_args:
> + command = ' '.join(self._qemu_full_args)
> + else:
> + command = ''
> + LOG.warn(msg, exitcode, command)
> +
> underscore_to_dash = string.maketrans('_', '-')
> def qmp(self, cmd, conv_keys=True, **args):
> '''Invoke a QMP command and return the result dict'''
> --
> 2.13.5
>
>
- [Qemu-devel] [PATCH v8 02/13] qemu.py: avoid writing to stdout/stderr, (continued)
- [Qemu-devel] [PATCH v8 02/13] qemu.py: avoid writing to stdout/stderr, Amador Pahim, 2017/09/01
- [Qemu-devel] [PATCH v8 01/13] qemu.py: fix is_running() return before first launch(), Amador Pahim, 2017/09/01
- [Qemu-devel] [PATCH v8 03/13] qemu.py: use os.path.null instead of /dev/null, Amador Pahim, 2017/09/01
- [Qemu-devel] [PATCH v8 04/13] qemu.py: improve message on negative exit code, Amador Pahim, 2017/09/01
- Re: [Qemu-devel] [PATCH v8 04/13] qemu.py: improve message on negative exit code,
Fam Zheng <=
- [Qemu-devel] [PATCH v8 06/13] qemu.py: make sure we only remove files we create, Amador Pahim, 2017/09/01